Answer this question truthfully
### Question: When to seek urgent medical care when I have Esophageal cancer ?
### Response: Call your health care provider if symptoms of esophageal cancer develop. If you are experiencing one or several of the following symptoms, you should seek urgent medical care as soon as possible:
Severe dysphagia: Esophageal cancer causes problems swallowing and eventually may prevent patients from being able to swallow at all. You need to see the doctor to obtain nutritional support.
Vomiting a large amount of blood: This is the result of cancer invading the vessels of esophageal wall.